Mold-forming machine.



No. 850,768. PATENTED APR. 16, 1907.

' J. MAGPHAIL.

MOLD FORMING MACHINE. APPLIOATIOHI FILED NOV 27, 1906 v INVENTOR.

W/TNESSES:

g Mag 20 TTORNEKS rm} nouns Psrzks cm. wasumaron. n. c.

pmrnn sTA'rns PATENT oFFIoE.

JAMES MAOPHAIL, OF MOLINE, ILLINOIS, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO KILLING MOLDING MACHINE COMPANY, OF DAVENPORT,

IOWA, A CORPORATION.

Specification of Letters Patent.

Patented April 16, 1907.

Application filed November 27, 1905. Serial No. 289,295.

To (all who/rt it In/ concern/.-

Be it known that I, JAMES MACPHAIL, a citizen of the United States of America, residing at Moline, Rock Island county, State of Illinois, have invented a new and useful Mold-Forming Machine, of-which the following is a specification.-

My invention relates to improvements in machines for forming sand molds for casting IO metals; and it has for its object the quickening of the operation of forming such molds, particularly such 'molds that the pattern must be withdrawn in a direction at right angles to the plane of the pattern or pattern- I 5 plate, and the construction of a simple, easilyoperated, and inexpensive machine for that purpose. I attain these objects by the mechanism illustrated in the accompanying drawings, in which Figure 1 is a side view of the machine, showing the pattern drawn from the mold and held by detents or stops, and in dotted lines the swinging frame in position to have the flask placed upon it to form a new mold.

Fig. 2 is a top view of the machine in the same position as in Fig. 1. Fig. 3 is a vertical section through themachine on the line X X of Fig. 2 and shows the mold formed in the flask.

0 The frame is in two parts, a base-frame A and a swinging frame or rocking frame B. The base-frame A comprises two lateral parts or bars connected by a rib A and suspended U-shaped braces A", the latter being support- 3 5 ed between the lateral parts A and secured by bolts A and forming a rest for the bottom board when flask is inverted.

Each lateral part is provided with a raised middle hearing A, through which passes the pivot or shaft O, and also with. a raised support A at one end, upon which an arbor g of the pattern-plate D rests when the patternplate is in its first position.

For convenience of reference I designate the position of the swinging or rocking frame, pattern-plate, pattern, and flask when the flask is ready to be filled with sand and rammed as the first position, and the position when the pattern has been drawn from the mold as the second position.

The swinging frame B is secured to the pivot or shaft 0 which passes through it, by

set-screws d.

The free end is provided with a handle B to enable the operator to grasp and swing the frame readily. A strippingplate D is secured to the frame B, and a pattern-plate D is slidingly mounted upon guides E, secured to the swinging frame. The pattern I) is secured to or formed integral with the pattern-plate D, which is provided with rollers G G, mounted upon arbors g 9.

Adjustable. detents or stops H H, each consisting of a lever with a long and two short arms, are pivoted upon each end of the shaft C. Lugs a are formed upon eachside of the frame, through which pass set-screws a a adapted to adjust the position of the stops H H and limit the descent of the long arms H H. Each short arm H is provided with an attached set-screw I, to which one end of a spring I is secured, the other end of the spring 1 being secured by a hook K, formed upon a bolt adjustably secured in the lug K by a nut K One end of the shaft C is formed into a crank G which engages a compressionspring O by suitable rods orlinks, the opposite end of the spring C being secured to the base-frame by a suitable rod or link.

The stripping-plate D is of sufficient thickness to assist in guiding the pattern when withdrawn and may be made of suflicient thickness to obviate the need of the guides E E. The guides E E are fitted with pins or keys 6 e, so as to limit the movement of the pattern-plate thereon.

A removable clamp is formed by the bent or curved bar O, one end of which is formed into an arm having a handle O adapted to be grasped by the hand of the operator with the handle B. The other end is formed with an arm having a bent extremity adapted to rest against the pivot or shaft O. The mid- A dle portion of the clamp C is recurved to press against the bottom board F and to hold the bottom board F and the flask F in position during the partial revolution of the swinging frame.

In making molds by swinging or rocking machines heretofore used it has been impossible to form molds of any depth except from patterns which conformed to the line of travel of the pattern when being withdrawn from the mold without breaking or injuring the mold. The construction shown will allow the formation of molds rapidly and easily upon the arbors g g,

which could not besuccessfully made by any form of such machines heretofore used It will also avoid the necessity of gaggers and the consequent difficulty in ramming and theamount of lead heretofore required The automatic reseating of the patternplate when the swinging frame is replaced in its first position increases the speed of the work. The stop H and spring I cushions the descent of the swinging frame into its second position, and the spring I draws the arm H into a nearly-vertical position when the swinging frame is swung back into the first posi tion, thus leaving the way clear for the re moval of the completed mold and flask. The particular form of clamp used nas advantages over others now in use, being easily detachable, giving a broad holding-surface, and being easily changed in dimensions for different flasks.

The drawings illustrate the machine with a hub-pattern on the pattern-plate, but obviously the form of the swinging frame, pattern-plate, and stripping-plate may be changed to meet the requirements of each particular case.

In operation the swinging frame B is I thrown into the first position. The supports A A force the pattern-plate Dinto position with the pattern D projecting through the stripping-plate D. Parting-sand then is sifted or sprinkled on the stripping-plate D and the flask F placed upon the strippingplate. The molding-sand is then properly rammed, the bottom board put on, and the clamp C placed with handle adjacent to the handle B and the opposite end under the shaft C and its middle portion against the bottom board F and securely held while the swinging frame is swung or rocked over into the second position. While descending into the second position, the rollers G G, mounted strike the stops H H, which limit the descent of the pattern. The swinging frame and flask continue their descent until the bottom board rests upon the braces A A, when the pattern is entirely drawn from the mold. The swinging frame is then returned to its first position. The springs I I draw the arms H H into an upright position, and the mold and flask can be removed freely.

Various forms of clamp may be used, but the form shown is preferred.

Having shown and described my invention, What I claim, and desire to secure by Letters Patent, is

1 In a mold-forming machine, the combination of a base, a swinging flask-receiving frame pivoted to said base, a movable pat tern member arranged to operate in said frame, and a spring-controlled stop for restricting the movement of said pattern member, substantially as set forth.

2. In a mold-forming machine, the combination of a base, a swinging flask-receiving frame pivoted to said base, a movable pattern member arranged to operate in said frame, a movable stop for restricting the movement of said pattern member, and adjustable means whereby said-stop is restricted in its movement, substantially as set forth.

In a mold-forming machine, the combination of a base, a swinging flask-receiving frame'pivoted to said base, a movable pattern member arranged o operate in said frame, a spring-controlled stop for restricting the movement of said patternmember, and adjustable means whereby said stop is restricted in its movement, substantially as set forth.

4. In a mold-forming machine, the combination of a base, a swinging flask-receiving frame pivoted to said base, a movable pattern member arranged to operate in said frame, and a vibratory stop for restricting the movement of said pattern member, substantially as set forth.

5. In a mold-forming machine, the combination of a base, a swinging flask-receiving frame pivoted to said base, a movable pattern member arranged to operate in said frame, and a vibratory spring-controlledstop for restricting the movement of said pattern member, substantially as set forth.

6. In a mold-forming machine, the combination of a base, a swinging flask-receiving frame pivoted to said base, a movable pattern member arranged to operate in said frame, a vibratory stop for restricting the movement of said pattern member, and adjustable means wherebysaid stop is restricted in. its movement, substantially as set forth.

7. In a mold-forming machine, the combination of a base, a swinging flask-receiving frame pivoted to said base, a movable pattern member arranged to operate in said frame, a vibratory spring-controlled stop for restricting the movement of said pattern member, and adjustable means whereby said stop is restricted in its movement, substantially as set'forth.

8. In a mold-forming machine, thecombination of a base, a swinging flask-receiving frame pivoted to said base, a pattern member arranged to operate in said frame, arbors carried by said pattern member, and movable stops arranged to be engaged by said arbors, substantially as set forth.

9. In a mold-forming machine, the combination of a base, a swinging flask-receiving frame pivoted to said base, a pattern member arranged to operate in said frame, arbors carried by said pattern member, and movable spring-controlled stops arranged to be pngaged by said arbors, substantially as set 'orth.

\ 10] The stop mechanism for arresting, 1owering, and withdrawing a pattern-plate, consisting of a lever having a long arm, against which the pattern-plate impinges, and two short arms, a spring connected with one short arm so as to seat the long arm, and means against which the other short arm is adapted to impinge so as to limit the movement of the long arm.

11. The stop mechanism for arresting, lowering, and withdrawing a'patt'ern-plate, consisting of a lever having a long arm, against which the pattern-plate impinges, and two short arms, a spring connected with one short arm so as to seat the long arm, means for ad justing the tension of the spring and means against which the other short arm is adapted to impinge so as to limitthe movement of the long arm.

12. The stop mechanism for arresting, lowering, and withdrawing a pattern-plate consisting of a lever having a long arm, against which the pattern-plate impinges, and two short arms, a spring connected with one short arm so as to seat the long arm, a lug, an eyescrew connected with the spring and adjustable in the lug for adjusting the tension of the spring, and means against which the other short arm is adapted to impinge to limit the movement of the long arm.

13. The stop mechanlsm for arresting, lowering and withdrawing a pattern-plate consisting of a lever having a long arm, against which the pattern-plate impinges, and two short arms, a spring connected with one short arm so as to seat the long arm, a lug, and a set-screw working in the lug against which the other short arm is adapted to impinge so as to limit the movement of the long arm.

14. A mold-forming machine comprising a base-frame, a swinging frame, a patternplate, and a stop pivoted to the base-frame, and consisting of a long arm, two short arms, a spring connected with one short arm, and means located upon the base-frame against which the other short arm is adapted to impinge for limiting the movement of the long arm.

15. A mold-forming machine comprising a base frame, a swinging frame, a patternplate, and a stop pivoted to the base-frame, and consisting of a long arm, against which the pattern-plate impinges, two short arms, a spring connected with one short arm so as to seat the long arm, means located upon the base-frame for adjusting the tension of the spring, and means located upon the base frame against which the other short arm is adapted to impinge so as to limit the movement of the long arm.

16. A mold-forming machine comprising a base-frame, a swinging frame, a patternplate, and a stop pivoted to the base-frame and consisting of a long arm against which the pattern-plate impinges, two short arms, a spring connected with one short arm so as to seat the long arm, a lug located upon the base-frame, an eye-screw connected with the spring and adjustable in the lug for adjusting the tension of the spring, and means against which the other short arm is adapted to im pinge to limit the movement of the long arm.

17. A mold-forming machine comprising a base-frame, a swinging frame, a patternplate, and a stop pivoted to the base-frame consisting of a long arm, against which the pattern-plate impinges, two short arms, a spring connected with one short arm so as to seat the long arm, a lug located upon the base-frame and a set-screw working in the lug against which the other short arm is adapted to impinge so as to limit the movement of the long'arm.

18. In a mold-forming machine, the combination with a base, of a swinging frame pivoted therein adapted to receive a flask, guides secured to the swinging frame, a patternplate slidingly mounted upon the guides, a stripping plate secured to the swinging frame, and arbors secured to the patternplate, and stops secured to the base-frame to engage the arbors.

19. in a mold-forming machine, the com bination with a base-frame of a swinging frame pivoted therein adapted to receive a flask, guides secured to the pivoted frame substantially at right angles thereto, a pattern-plate slidingly mounted up on the guides and arbors secured to the pattern-plate adapted to be engaged by spring-stops adjustably secured to the base-frame.

20. 111 a mold-forming machine, the com bination with a base-frame, of a swinging frame pivoted therein with a stripping-plate secured on the swinging frame adapted to receive a flask, a pattern slidingly mounted in the stripping plate upon a pattern plate, trunnions secured to the pattern-plate adapted to be engaged by adjustable spring-stops secured to the base-frame.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

June 26, 1905.

JAMES MAGPHAIL.

Witnesses:

J OE SHonnY, A. G. BUSH. 

